Quarterly Percent
1999-04-01 40.7
2000-04-01 41.4
2001-04-01 42.4
2002-04-01 43.5
2003-01-01 43.7
2003-04-01 43.7
2003-07-01 43.7
2003-10-01 43.7
2004-01-01 45.4
2004-04-01 45.4
2004-07-01 45.4
2004-10-01 45.4
2005-01-01 46.3
2005-04-01 46.3
2005-07-01 46.3
2005-10-01 46.3
2006-01-01 49.4
2006-04-01 49.4
2006-07-01 49.4
2006-10-01 49.4
2007-01-01 50.4
2007-04-01 48.3
2007-07-01 50.8
2007-10-01 52
2008-01-01 48.1
2008-04-01 48.8
2008-07-01 47.8
2008-10-01 47.5
2009-01-01 50.6
2009-04-01 49.5
2009-07-01 49.7
2009-10-01 49.8
2010-01-01 49.8
2010-04-01 48.9
2010-07-01 50.2
2010-10-01 50.2
2011-01-01 51.2
2011-04-01 49.7
2011-07-01 50
2011-10-01 50.1
2012-01-01 50.9
2012-04-01 51.1
2012-07-01 53.4
2012-10-01 52.2
2013-01-01 52.3
2013-04-01 53
2013-07-01 51.9
2013-10-01 52.7
2014-01-01 53.3
2014-04-01 53
2014-07-01 53.2
2014-10-01 54.3
2015-01-01 55.4
2015-04-01 54.8
2015-07-01 54.2
2015-10-01 53.8
2016-01-01 53.1
2016-04-01 52.8
2016-07-01 54.0
2016-10-01 54.1
2017-01-01 54.8
2017-04-01 54.3
2017-07-01 56.3
2017-10-01 54.5
2018-01-01 56.1
2018-04-01 54.9